enum MyEnum { case case1 case case2 case case3 } let e = Optional<MyEnum>.some(.case1) switch e { case .some(.case1): print("case1") case .some(.case2): print("case2") case .some(.case3): print("case3") case .none: print("none") }enum MyEnum { case case1 case case2 case case3 } let e = Optional<MyEnum>.some(.case1) switch e { case .some(.case1): print("case1") case .some(.case2): print("case2") case .some(.case3): print("case3") case .none: print("none") }